| (A) | |||||||||||||||||
|
| Metabasites of Moumba | ||||||||||||||||
| Sample | Mou 01 | Mou 05 | Mou 16 | Mou 7b | Mou 11 | Mou 15 | Mou 17 | Mou 23 | |||||||||
| Petrology | Grenschist | Epidotites | |||||||||||||||
| SiO2 | 45.47 | 52.79 | 45.53 | 43.97 | 49.85 | 41.57 | 48.44 | 48.65 | |||||||||
| Al2O3 | 16.10 | 13.77 | 13.60 | 16.08 | 11.61 | 15.88 | 14.01 | 9.86 | |||||||||
| Fe2O3 | 14.43 | 12.76 | 13.82 | 14.87 | 14.16 | 14.46 | 12.63 | 15.07 | |||||||||
| MnO | 0.18 | 0.28 | 0.19 | 0.20 | 0.30 | 0.26 | 0.18 | 0.23 | |||||||||
| MgO | 5.70 | 5.87 | 4.35 | 6.32 | 6.54 | 5.42 | 4.53 | 8.11 | |||||||||
| CaO | 5.55 | 4.87 | 16.27 | 7.82 | 11.40 | 13.45 | 13.03 | 10.99 | |||||||||
| Na2O | 4.42 | 4.25 | 1.53 | 3.90 | 3.01 | 2.16 | 2.90 | 2.66 | |||||||||
| K2O | 0.05 | 0.07 | 0.09 | 0.20 | 0.22 | 0.11 | 0.10 | 0.18 | |||||||||
| TiO2 | 3.41 | 1.68 | 1.65 | 2.23 | 1.17 | 1.39 | 1.35 | 2.36 | |||||||||
| P2O5 | 0.37 | 0.39 | 0.40 | 0.49 | 0.34 | 0.41 | 0.37 | 0.14 | |||||||||
| PF | 3.78 | 2.91 | 1.49 | 2.98 | 1.24 | 3.67 | 1.49 | 1.38 | |||||||||
| Total | 99.44 | 99.65 | 98.92 | 99.06 | 99.83 | 98.78 | 99.04 | 99.62 | |||||||||
| As | 1.44 | 1.36 | 1.74 | 1.54 | 1.92 | 1.87 | 2.66 | 1.42 | |||||||||
| Ba | 196 | 122 | 34.8 | 164 | 137 | 99.0 | 105 | 113 | |||||||||
| Be | 0.49 | 0.46 | 0.75 | 0.43 | 1.12 | 0.56 | 0.74 | 1.31 | |||||||||
| Bi | 0.17 | 0.5 | 0.10 | 0.11 | 0.12 | 0.08 | 0.08 | 0.5 | |||||||||
| Cd | 0.13 | 0.24 | 0.20 | 0.13 | 0.17 | 0.14 | 0.19 | 0.13 | |||||||||
| Co | 50.4 | 51.9 | 29.7 | 60.2 | 50.3 | 46.6 | 41.4 | 53.2 | |||||||||
| Cr | 90.0 | 66.7 | 81.5 | 90.5 | 52.0 | 83.7 | 72.3 | 68.1 | |||||||||
| Cs | 0.02 | 0.05 | 0.09 | 0.65 | 0.73 | 0.13 | 0.05 | 0.25 | |||||||||
| Cu | 55.1 | 24.0 | 44.8 | 39.0 | 49.2 | 42.0 | 252 | 76.4 | |||||||||
| Ga | 20.9 | 15.9 | 21.9 | 24.4 | 17.7 | 26.6 | 19.7 | 13.6 | |||||||||
| Ge | 2.19 | 1.15 | 2.62 | 1.84 | 2.16 | 2.03 | 2.42 | 1.95 | |||||||||
| Hf | 3.79 | 2.15 | 2.59 | 3.15 | 1.77 | 2.36 | 2.18 | 2.67 | |||||||||
| Mo | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.71 | |||||||||
| Nb | 14.4 | 7.47 | 7.48 | 9.53 | 5.07 | 6.07 | 5.69 | 10.2 | |||||||||
| Ni | 102 | 108 | 103 | 131 | 121 | 122 | 95.6 | 143 | |||||||||
| Pb | 6.69 | 2.29 | 6.90 | 4.73 | 5.18 | 7.08 | 5.02 | 3.75 | |||||||||
| Rb | 0.39 | 0.73 | 0.79 | 7.19 | 4.96 | 1.18 | 0.69 | 4.08 | |||||||||
| Sb | 0.37 | 0.21 | 0.22 | 0.33 | 0.34 | 0.35 | 0.28 | 0.27 | |||||||||
| Sc | 55.47 | 28.20 | 35.34 | 38.38 | 23.54 | 28.66 | 30.93 | 31.78 | |||||||||
| Sr | 301 | 157 | 532 | 349 | 364 | 486 | 593 | 184 | |||||||||
| Ta | 1.01 | 0.55 | 0.52 | 0.66 | 0.36 | 0.44 | 0.39 | 0.68 | |||||||||
| Th | 1.51 | 0.65 | 0.71 | 0.92 | 0.46 | 0.68 | 0.62 | 0.67 | |||||||||
| U | 0.38 | 0.10 | 0.16 | 0.20 | 0.13 | 0.15 | 0.14 | 0.10 | |||||||||
| V | 378 | 240 | 332 | 310 | 309 | 290 | 293 | 376 | |||||||||
| Y | 40.0 | 19.6 | 20.3 | 27.6 | 15.1 | 21.3 | 19.2 | 17.6 | |||||||||
| Zr | 151 | 84.7 | 109 | 123 | 72.4 | 102 | 92.6 | 113 | |||||||||
| La | 21.1 | 10.7 | 12.4 | 15.7 | 8.50 | 12.8 | 10.4 | 9.07 | |||||||||
| Ce | 46.4 | 21.8 | 26.5 | 31.6 | 18.0 | 26.8 | 22.4 | 19.3 | |||||||||
| Pr | 6.09 | 2.80 | 3.52 | 4.21 | 2.24 | 3.46 | 2.96 | 2.52 | |||||||||
| Nd | 26.7 | 12.2 | 15.7 | 18.3 | 10.0 | 15.4 | 13.4 | 11.0 | |||||||||
| Sm | 6.56 | 3.01 | 3.75 | 4.48 | 2.34 | 3.73 | 3.17 | 2.55 | |||||||||
| Eu | 2.56 | 1.11 | 1.33 | 1.92 | 0.983 | 1.49 | 1.23 | 0.921 | |||||||||
| Gd | 6.78 | 3.03 | 3.71 | 4.54 | 2.41 | 3.79 | 3.31 | 2.62 | |||||||||
| Tb | 1.13 | 0.515 | 0.604 | 0.747 | 0.410 | 0.607 | 0.534 | 0.439 | |||||||||
| Dy | 7.40 | 3.39 | 3.73 | 4.85 | 2.71 | 3.83 | 3.40 | 3.02 | |||||||||
| La/Ta | 21.02 | 19.64 | 23.96 | 23.94 | 23.74 | 29.37 | 26.58 | 13.41 | |||||||||
| La/Th | 14.03 | 16.61 | 17.60 | 17.03 | 18.30 | 18.80 | 16.85 | 13.62 | |||||||||
| Th/Ta | 1.50 | 1.18 | 1.36 | 1.41 | 1.30 | 1.56 | 1.58 | 0.98 | |||||||||
| Th/La | 0.07 | 0.06 | 0.06 | 0.06 | 0.05 | 0.05 | 0.06 | 0.07 | |||||||||
| Sm/Y | 0.16 | 0.15 | 0.19 | 0.16 | 0.15 | 0.18 | 0.16 | 0.15 | |||||||||
| (B) | |||||||||||||||||
|
| Metabasites of Moumba | ||||||||||||||||
| Sample | Mou13 | Mou19 | Mou20b | Mou21 | Mou25 | Mou28 | Mou31 | Mou12 | Mou30 | ||||||||
| Petrology | Amphibolites | Metagabbros | |||||||||||||||
| SiO2 | 46.35 | 44.78 | 46.93 | 42.02 | 43.95 | 46.49 | 45.20 | 42.64 | 41.56 | ||||||||
| Al2O3 | 15.87 | 15.25 | 14.64 | 14.68 | 15.46 | 14.63 | 17.42 | 16.24 | 15.94 | ||||||||
| Fe2O3 | 13.69 | 14.96 | 14.19 | 16.37 | 14.77 | 13.63 | 13.09 | 15.67 | 14.90 | ||||||||
| MnO | 0.18 | 0.21 | 0.19 | 0.22 | 0.23 | 0.21 | 0.25 | 0.24 | 0.24 | ||||||||
| MgO | 5.77 | 7.67 | 7.05 | 8.51 | 6.93 | 6.56 | 6.02 | 7.70 | 6.87 | ||||||||
| CaO | 8.13 | 7.93 | 7.32 | 7.89 | 8.37 | 8.83 | 10.87 | 8.43 | 9.12 | ||||||||
| Na2O | 4.06 | 3.57 | 4.21 | 2.78 | 3.20 | 3.65 | 2.64 | 3.07 | 3.45 | ||||||||
| K2O | 0.11 | 0.15 | 0.12 | 0.10 | 0.13 | 0.13 | 0.13 | 0.10 | 0.19 | ||||||||
| TiO2 | 1.87 | 1.73 | 1.73 | 2.39 | 1.84 | 1.38 | 1.03 | 1.65 | 1.83 | ||||||||
| P2O5 | 0.56 | 0.55 | 0.46 | 0.62 | 0.56 | 0.62 | 0.19 | 0.67 | 0.78 | ||||||||
| PF | 2.80 | 2.86 | 2.60 | 3.63 | 3.50 | 2.76 | 3.23 | 3.69 | 5.03 | ||||||||
| Total | 99.38 | 99.66 | 99.45 | 99.19 | 98.95 | 98.87 | 100.05 | 100.09 | 99.89 | ||||||||
| As | 1.54 | 1.10 | 1.25 | 4.81 | 1.54 | 1.46 | 1.28 | 1.74 | 2.70 | ||||||||
| Ba | 78.0 | 61.3 | 54.7 | 26.1 | 86.1 | 68.2 | 69.6 | 51.6 | 238 | ||||||||
| Be | 0.46 | 0.53 | 0.67 | 0.74 | 0.54 | 0.62 | 0.50 | 0.48 | 0.37 | ||||||||
| Bi | 0.10 | 0.09 | 0.12 | 0.11 | 0.16 | 0.05 | 0.05 | 0.06 | 0.11 | ||||||||
| Cd | 0.11 | 0.11 | 0.08 | 0.24 | 0.13 | 0.10 | 0.16 | 0.12 | 0.18 | ||||||||
| Co | 51.5 | 61.6 | 57.8 | 65.2 | 63.7 | 54.0 | 40.4 | 66.4 | 67.9 | ||||||||
| Cr | 79.8 | 82.2 | 81.7 | 90.0 | 94.7 | 84.7 | 56.5 | 85.0 | 86.9 | ||||||||
| Cs | 0.16 | 0.20 | 0.10 | 0.11 | 0.17 | 0.13 | 0.07 | 0.14 | 0.36 | ||||||||
| Cu | 145 | 18.0 | 72.1 | 89.2 | 9.5 | 28.2 | 4.1 | 96.6 | 438 | ||||||||
| Ga | 23.5 | 18.9 | 18.2 | 20.6 | 21.4 | 18.5 | 28.9 | 24.4 | 25.1 | ||||||||
| Ge | 1.59 | 1.67 | 1.35 | 1.56 | 1.70 | 1.79 | 3.12 | 1.73 | 1.70 | ||||||||
| Hf | 2.74 | 2.99 | 2.44 | 3.40 | 2.70 | 3.46 | 2.38 | 3.24 | 2.97 | ||||||||
| In | 0.07 | 0.09 | 0.06 | 0.06 | 0.07 | 0.07 | 0.08 | 0.09 | 0.08 | ||||||||
| Mo | 0.54 | 0.5 | 0.5 | 0.60 | 0.5 | 0.5 | 0.5 | 0.82 | 0.95 | ||||||||
| Nb | 7.74 | 7.15 | 7.10 | 10.1 | 7.52 | 5.75 | 6.45 | 7.13 | 7.94 | ||||||||
| Ni | 114 | 119 | 121 | 146 | 130 | 107 | 83.7 | 135 | 136 | ||||||||
| Pb | 4.54 | 6.69 | 2.29 | 6.90 | 4.73 | 5.18 | 7.08 | 5.02 | 3.75 | ||||||||
| Rb | 1.09 | 1.72 | 0.94 | 1.71 | 2.40 | 1.47 | 2.52 | 2.24 | 3.74 | ||||||||
| Sb | 0.35 | 0.26 | 0.20 | 0.22 | 0.49 | 0.25 | 2.24 | 0.28 | 0.35 | ||||||||
| Sc | 33.84 | 39.00 | 31.24 | 32.83 | 34.38 | 32.08 | 24.40 | 36.54 | 32.90 | ||||||||
| Sn | 0.69 | 0.71 | 0.69 | 0.70 | 0.70 | 0.56 | 0.58 | 0.70 | 0.79 | ||||||||
| Sr | 332 | 207 | 178 | 231 | 249 | 256 | 1039 | 344 | 277 | ||||||||
| Ta | 0.54 | 0.50 | 0.50 | 0.70 | 0.55 | 0.41 | 0.40 | 0.52 | 0.56 | ||||||||
| Th | 0.74 | 0.98 | 0.66 | 0.74 | 0.79 | 0.85 | 0.78 | 1.03 | 0.89 | ||||||||
| U | 0.17 | 0.20 | 0.13 | 0.14 | 0.10 | 0.15 | 0.19 | 0.21 | 0.18 | ||||||||
| V | 296 | 292 | 282 | 300 | 299 | 277 | 229 | 302 | 297 | ||||||||
| Y | 23.5 | 26.0 | 20.0 | 23.5 | 21.6 | 23.3 | 21.6 | 28.0 | 27.4 | ||||||||
| Zn | 110 | 140 | 126 | 163 | 141 | 123 | 174 | 146 | 142 | ||||||||
| Zr | 115 | 125 | 99.9 | 143 | 112 | 111 | 89.9 | 137 | 125 | ||||||||
| La | 12.7 | 14.7 | 10.2 | 11.1 | 13.3 | 13.4 | 13.6 | 16.0 | 15.4 | ||||||||
| Ce | 26.5 | 31.9 | 21.9 | 23.9 | 28.7 | 29.6 | 26.0 | 34.6 | 33.3 | ||||||||
| Pr | 3.44 | 4.26 | 2.90 | 3.18 | 3.65 | 3.94 | 3.15 | 4.56 | 4.43 | ||||||||
| Nd | 15.3 | 19.0 | 13.0 | 14.3 | 16.0 | 17.8 | 13.4 | 20.5 | 20.0 | ||||||||
| Sm | 3.72 | 4.55 | 3.09 | 3.50 | 3.83 | 4.35 | 3.41 | 4.86 | 4.71 | ||||||||
| Eu | 1.61 | 1.71 | 1.27 | 1.27 | 1.52 | 1.36 | 1.37 | 1.83 | 1.94 | ||||||||
| Gd | 3.87 | 4.72 | 3.29 | 3.64 | 3.91 | 4.42 | 3.64 | 4.94 | 4.82 | ||||||||
| Tb | 0.645 | 0.776 | 0.546 | 0.620 | 0.631 | 0.697 | 0.615 | 0.824 | 0.793 | ||||||||
| Dy | 4.23 | 4.89 | 3.51 | 4.16 | 3.99 | 4.44 | 3.94 | 5.08 | 5.05 | ||||||||
| La/Ta | 29.24 | 20.48 | 15.90 | 24.41 | 32.82 | 33.95 | 31.04 | 27.29 | 29.24 | ||||||||
| La/Th | 15.09 | 15.42 | 15.01 | 16.84 | 15.80 | 17.54 | 15.56 | 17.37 | 15.09 | ||||||||
| Th/Ta | 15.09 | 15.42 | 15.01 | 16.84 | 15.80 | 17.54 | 15.56 | 17.37 | 15.09 | ||||||||
| Th/La | 1.94 | 1.33 | 1.06 | 1.45 | 2.08 | 1.94 | 1.99 | 1.57 | 1.94 | ||||||||
| Sm/Y | 0.18 | 0.15 | 0.15 | 0.18 | 0.19 | 0.16 | 0.17 | 0.17 | 0.18 | ||||||||